|
Detailed Reference Information |
Armadillo, E., Ferraccioli, F., Tabellario, G. and Bozzo, E. (2004). Electrical structure across a major ice-covered fault belt in Northern Victoria Land (East Antarctica). Geophysical Research Letters 31: doi: 10.1029/2004GL019903. issn: 0094-8276. |
|
A Geomagnetic Depth Sounding profile was performed across the glaciated Rennick Graben and the adjacent fault-bounded terranes of northern Victoria Land in East Antarctica. Induction arrows analysis and a 2D inversion model provide a unique deep electrical resistivity window beneath these fault zones. The electrical resistivity break across the Lanterman Fault is apparently restricted to the upper crust, suggesting that this strike-slip fault may not represent a deep lithospheric suture. Further east, a westward-dipping conductor is traced to a depth of 40 km beneath the Robertson Bay Terrane. It may image a remnant of the paleo-Pacific oceanic plate, which subducted beneath the Bowers Terrane. Within the Wilson Terrane, the Rennick Graben is an upper-crust resistive block. The Rennick Graben lacks a deep crustal or upper mantle conductor, in contrast to several continental rifts. However, similar resistive lower crust underlies some other major strike-slip fault belts. |
|
|
|
BACKGROUND DATA FILES |
|
|
Abstract |
|
|
|
|
|
Keywords
Exploration Geophysics, Magnetic and electrical methods, Exploration Geophysics, Continental structures (8109, 8110), Tectonophysics, Continental tectonics—extensional, Tectonophysics, Continental tectonics—general |
|
Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
|
|
|